Door latch



s. w. PARSONS l DOOR LATCH Filed May 2l 1925 a I l A., f. l a/.w 2 5 2cl. .www C N 50 mounted for sliding movement; sired, it may be screwedinto the head, as

Patented VMar. 1, 1927. n UNITED STATES PATENT FFICE.v

STUART W. PARSONS, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE STANLEYWORKS, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

DOOR LATCH.

Application filed May 21, 1926. SerialNo. 110,792.

This invention relates to a door latch of to bke-secured as hereinafterdescribed more the type having a spring projectedV bolt conin detail.trolled by an operating member, such as a. Referring to the drawings indetail, a thumb piece, acting through a lever condenotes, generally, thecasing having afront nected to the bolt. or face plate I). c is thebolt, the inner end 60 The aim of the invention is to provide a of whichis guided by a member d. e is the latch of this sort having variousfeatures spring normally urging the bolt into adof novelty and advantageand whichis parfanced position, and f is a lever operatively ticularlycharacterized by its simplicity and connected to the bolt and pivoted ona stud g.

economy in construction, its durability and The operating member, in thepresent illus- 65 its effectiveness in operation. Y trative disclosure,is shown as being in the Morel particularly, the aim of the inven-y formof a thumb piece h of the usual type,

- tion is to provide a door latch wherein each and 1l is a handleconnected to the door k.

of the parts may be cheaply made; wherein The casing includes two parts,each of the parts may be readily assembled; wherewhich is preferablyformed from sheet metal 70 in the bolt has an easy, smooth movement, soas to eiiect economy in manufacture. all danger of the bolt stickingbeingelimi.- Gne of these parts hasa side 10, the edges nated; .whereinthe part-s are Veffectively of which are bent over so as to form a topmaintained in their proper relation, so that wall 11, a bottom wall 12and a rear wall 13.

there is no likelihood of the latch getting The top and bottom walls 11and 12 have, 75 out of order, and which may be operated attheir forwardends, lugs 15 which extend with a minimum amount of effort. through theface plate, and these lugs are Other objects will be in part obvious andpeened over as shown. The other art of inpart pointed out more in detailhereinthe casing comprises a removable si e plate after. 16 having, inits rear edge, a notch or re SQ rIhe invention accordingly consists inthe cess 17 adapted to closely receive an extenfeatures ofconstruction,combination of elesion 18 on the rear wall 13. The forward'ments vandarrangement of parts which will end of the side wall 10 has aprojection 19. be exemplified in the construction herein- On the forwardedge of the removable side after set forth and the scope of the applicaplate 16 is a similar projection 20, and these 85 tion of which willbeindicated in the approjections, when the parts are assembled, pendedclaims. extend into, and engage the respective side In the vaccompanyingdrawings, wherein edges of, the opening 21 in the face plate I haveShown, for illustrative purposes, one and within which o ening the head22 of of the many lembodiments which the present the bolt 0 is mounte Byconstructing the 90 invention may take: casing in the manner described,a very eco Figure 1 is a side view of my improved nomical arrangement isobtained, and the latch with the side plate of the casing reparts may bequickly assembled and are very moved and parts shown in section;securely held together. Furthermore, a

40 Fig. 2 is a vertical sectional view taken smooth and solid backingfor the bolt is had, substantally on line 2-2 of Fig. 1, and it beingobserved that the bolt is reversible, shows the thumb piece or operatinglever as shown in Fig. 3, and that, in either posiand a portion of thehandle in dotted lines; tion of the bolt, it is guided by the side wallsFig. 3 is a horizontal sectional view taken of the casing and the lugs19 and 20, there on line 3-3 of Fig. 1; being no breaks or cracks inthese guiding 100 Fig. i is a front view of the face plate, surfaces sothat the bolt will have a smooth and illustrates the manner in which thelugs action. on the sides of the casing engage in the The bolt has ashank 25 which ma be opening in which the head of the bolt is formedintegrally with the head or, i de- Fig. 5 is a view of the removableside shown in Fig. 8. On the rear end of this plate `of the casing; andshank is a button 26. The shank is sup- Fig. 6 is a perspective view ofthe guide ported and guided by the member d. Bemember for the bolt andto which guide tween this member and the head 22 is the 5 member theremovable side plate is adapted coiled spring e. Interposed between theend 110 verse or cross portion 40.

,sideplate 1G when this of the spring and the member d *is a washer 27.

The member d is preferably formedof sheet metal and has a pair of lugs28 between which fthe shank of the bolt is slidably mounted. The memberZ is secured to the wall l() of the casing by peened over lu-gs 30.Carried by one of the lugs 28 is a bent over ear 3l having a. screwthreaded aperture 32 adapted to receive a screw 33 by meansof which theremovable side plate le is secured in place. It will be noted that thismember CZ, which is very simple in construction and which may beeconomically formed, in addition to acting as a guide forthe bolt,constitutes an .anchor to which the removable side plate 16 is secured.

The lever f has a generally U-shaped body with 'side'portionsBS and 39and a transrI'he body is of a width substantially co-extensive with thedistance betweenfthe sides of the casing so that the'l'ev'er isImaintained against lateral canting or tilting. Extending upwardly fromone side portion .of the U-shaped body is an arm 4l which engagesbetween the member Z anidthebutton 26 of thebolt. Extending rearwardlyfrom one side of the U-shaped body is an apertured ear 42 through whichextends the :pivot or stud g. One endf of this pivot `extends through'anaperture in the ywall 10'V and is peened over so as tosecure the. pivotin place. The other end ofthe stud is of reduced diameter and is adaptedto engage in a similarly sized aperture 48 inthe plate is in position.It'will be noted that the'lever lf is formed 0f sheet metal so that itmay be veconomically manufactured and, when the vparts 'are in place,the l`lever is properly guided in vits movements.

vAdjacent the U-shape'd portion of the lever fthe casing is recessed, asillustrated, so asto accommodatethe operating member whichiis'here shownas being-inthe form of thethumb piece/z of the usual construction. If"desired, 'a secondfthumb piece extending to the opposite side of thedoor, so that the latch may -be operated from either' side, may beprovided, such au arrangement being an-l old and well known one.

'As many changes could-belmade in the above construction and manyapparently widely different embodiments of this invention could be madewithout departingfrom the scope thereof, it is intendedl that all mattercontained in the above description or shown in the accompanying drawingshall be interpreted as-illustrative and not in a` limit-in(T sense.

Itis also to befundcrstood thatlthe languageused inthe following Aclaimsis intended to cover-all of the generic and speci-o rfeatures of theinvention hereinfdescribed and -all statements ofthe scope of the invenaf face scribed and in combination, acasing ineluding a face plate withan opening for aecommodating a bolt, a part formed of sheet metal and`having side, top, bottom and rear walls, the llatter of which has anextension,

and a part comprising a removable side plate havinga notchcloselyreceiving said eXtension, said side wall andsa-id plateieachhaving a'projection extending into and engaging` a respective sideedgefof said opening; a bolt having a head slidably'mounted in saidopening and engaging the smootlnunbroken surfaces provided bythesidesofthe Casing-andthe said projections; a screw-securing said sideplate in place; -a lever-in said casing operativelyconnected to Isaidbolt, and an operating memberforv said-lever.

2. In a door Vlatchfof fthe-Characterde scribed and in combination, acasinghaving a -face plate providedwith an opening for accommodating abolt, a part for-med of sheet-metal and having a sidewall, and aremovable side plate; a spring projected bolt infsaid casing and havinga head-eX- tending through said'opening; a sheet metal member secured tosaid side wallanid'constit'uting aguide 'forsaid bolt and fan anchor forsaid side plate2 said memberhavinga pair of lugsstraddling-and guidingVsaid/bolt anda bent over ear with afthreadedaper'- ture; a screwextending through said A'side plate and engaged in'saitd apertureforsecuring said side plateinplace'; a lever in 'said casingVoperatively connected to said bolt, and means-for operating said lever.

3. In a door latch oftheicharacterdescribed and in combination, a casingincluding a face plate having an opening 4'for accommodatinga bolt, -asheet metal part havirr'g side, top, rear and bottom wal-ls andconnected to said-face plate,-and afremovable side plate, said side walland said side plate each'having a projection extending: into andengaginga respective side edge ofsaid open'- ing; a springprojectedboltfhaving a. head slidably mounted in said openinglbetweensai'dprojections; a sheet metal member connected'to said side wall andconstituting Ea guide for said bolt and -ananchor for said side plate,said member having la pair of lugs straddling said bolt and a bentoverear with a threaded aperture; a screw threaded in said aperture vandsecuring said side plate in place; a. leverpivoted in 4said casing andoperatively connected to said bolt, and a thumb piece for operating.said lever.

4. In a door latch ofthecharacterf'described, and in combination, acasing having plate and a pair of side walls;.fa bolt slidably mounted.in said casing fand extendloo ii-o

ing through said face plate; a lever in said sheet metal member havcasing having a body with aA pair of side portion, the sides of vvportions and a connecting vtransverse porand slidably eng tion,` an armextending from one of said of said casing, sa side portions andoperatively associated With tending from one said bolt, and an aperturedear extending portion and operatively asso from one of said sideportions, said side bolt, said lever portions engaging the respectiveside Walls extending ear jo of said casing and being guided thereby; a6. In a door pivot carried by said casing and extending scribed and incombination, through said apertured ear, and means for a face plate, apart and having side, top,

le sheet me ted in said casing and aid face plate; a sheet bolt andsecured to said for securing said'side l ieet metal lever haviated Withsaid iece engaging said lever.

UART lV. PARSONS.

operating said lever'.

5. In a door latch of thecharacter deand a removab scribed and incombination, a casing having bolt slidably moun a face plate and a pairof side Walls; a extending through s spring projected bolt slidablymounted in metal guide for said said casing and extending through saidface side Wall; a screw plate; a pivot carried by said casing; a leverplate to said journalled on said pivot and operatively asing an a-rmoperatively assoc sociated with said bolt, and means for operbolt; and athurib p ating said lever; said lever comprising a guide a sl ing aU-shaped body hich are parallel to age the respective side Walls idlever having an arm eX- of the sides or' the body ciated with theJfurther having. a rearwardly urnelled on said pivot.

latch of the character dea casing having y sheet metal bottom and rearWalls tal side plate; a

